Please fix the genre; this is not "Ethnic" but is a performance of a Neapolitan song as sung by an opera singer. "CO" in the matrix stands for CBS' New York City-based studio facilities; CO 25801 was recorded 1940-01-17 and CO 25899 was waxed 1940-01-31. So this matrix was made somewhere in the last two weeks of January 1940. Baritone Carlo Morelli (1897-1970) was then in his final season as a singer at New York's Metropolitan Opera; he had been with the company since 1935. Morelli was the younger brother of a more famous singer, Renato Zanelli. He was born in Chile, and mainly raised in the United States though his training, and his debut, were in Italy. "Canta Il Mare" (Song of the Sea; called in some sources "Sailor's Song") was first published in 1910 with words by Riccardo Mazzola and music by Enrico De Leva. Morelli has a bit more trouble with this one than with the Ponce on the flip; his pacing seems a little hurried, and he has a hard time hanging onto the big note towards the end. Though his engagement with the Met ended in 1940 he continued to sing in public at least through 1946 and he then settled in Mexico City as a singing teacher.